LymphedemaV1, Main, Exploration, bibRecord, 004583

Mansonia africana and Mansonia uniformis are Vectors in the transmission of Wuchereria bancrofti lymphatic filariasis in Ghana

Identifieur interne : 004583 ( Main/Exploration ); précédent : 004582; suivant : 004584

Mansonia africana and Mansonia uniformis are Vectors in the transmission of Wuchereria bancrofti lymphatic filariasis in Ghana

Auteurs : Josephine Ughasi [Ghana] ; Hilaria Esiawonam Bekard [Ghana] ; Maimouna Coulibaly [Mali] ; Delphina Adabie-Gomez [Ghana] ; John Gyapong [Ghana] ; Maxwell Appawu [Ghana] ; Michael David Wilson [Ghana] ; Daniel Adjei Boakye [Ghana]

Source :

Parasites & Vectors [ 1756-3305 ] ; 2012.

RBID : PMC:3419659

Descripteurs français

KwdFr :
- Animaux, Filariose lymphatique (transmission), Filariose lymphatique (épidémiologie), Ghana (épidémiologie), Humains, Sterculiaceae (), Sterculiaceae (parasitologie), Sterculiaceae (physiologie), Vecteurs insectes (parasitologie), Vecteurs insectes (physiologie), Wuchereria bancrofti.
MESH :
- parasitologie : Sterculiaceae, Vecteurs insectes.
- physiologie : Sterculiaceae, Vecteurs insectes.
- épidémiologie : Filariose lymphatique, Ghana.
- Animaux, Humains, Sterculiaceae, Wuchereria bancrofti.
Wicri :
- geographic : Ghana.

English descriptors

KwdEn :
- Animals, Elephantiasis, Filarial (epidemiology), Elephantiasis, Filarial (transmission), Ghana (epidemiology), Humans, Insect Vectors (parasitology), Insect Vectors (physiology), Sterculiaceae (classification), Sterculiaceae (parasitology), Sterculiaceae (physiology), Wuchereria bancrofti.
MESH :
- geographic , epidemiology : Ghana.
- classification : Sterculiaceae.
- epidemiology : Elephantiasis, Filarial.
- parasitology : Insect Vectors, Sterculiaceae.
- physiology : Insect Vectors, Sterculiaceae.
- transmission : Elephantiasis, Filarial.
- Animals, Humans, Wuchereria bancrofti.

Abstract

Background

Recent data from Ghana indicates that after seven rounds of annual mass drug administration (MDA) there is still sustained transmission albeit at low levels in certain areas where Anopheles melas, An. gambiae s.s., Mansonia and Culex species are the main biting mosquitoes. Anopheles gambiae s.l. and An. funestus are the known vectors in Ghana and a recent report indicated that An. melas could transmit at low level microfilaraemia. However, because An. melas is not found everywhere there was the need to determine whether any of the other culicine species could also be playing a role in the transmission of LF.

Methods

Indoor mosquitoes collected once a month for three months using pyrethrum spray catches in six communities within the Kommenda-Edina-Eguafo-Abirem (KEEA) District, Central Region of Ghana were morphologically identified, dissected and examined for the presence of W. bancrofti. Additionally, stored mosquito samples collected during previous years in 8 communities from the Gomoa District also in the Central Region were similarly processed. The identities of all W. bancrofti parasites found were confirmed using an established PCR method.

Results

A total of 825 indoor resting mosquitoes comprising of 501 Anopheles species, 239 Mansonia species, 84 Culex species and 1 Aedes species were dissected and examined for the presence of W. bancrofti. Mansonia africana had infection and infectivity rates of 2.5%. and 2.1% respectively. Anopheles gambiae s.l. had an infection rate of 0.4% and a similar infectivity rate. None of the Culex sp. and Aedes sp were found with infection. From the stored mosquitoes the infection and infectivity rates for M. africana were 7.6% (N = 144) and 2.8% respectively whilst the corresponding rates for M. uniformis were 2.9% (N = 244) and 0.8%.

Conclusions

This is the first report of Mansonia species as vectors of lymphatic filariasis (LF) in Ghana and in West Africa since that of 1958 in Guinea. The revelation of a hitherto unrecognised vector which is possibly more efficient in transmission than the recognised ones has a profound implication for elimination of lymphatic filariasis programmes in the sub-region.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3419659

DOI: 10.1186/1756-3305-5-89
PubMed: 22564488
PubMed Central: 3419659

Affiliations:

Le document en format XML

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 and <italic>Mansonia uniformis</italic>
 are Vectors in the transmission of <italic>Wuchereria bancrofti</italic>
 lymphatic filariasis in Ghana</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main"><italic>Mansonia africana</italic>
 and <italic>Mansonia uniformis</italic>
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 lymphatic filariasis in Ghana</title>
<author><name sortKey="Ughasi, Josephine" sort="Ughasi, Josephine" uniqKey="Ughasi J" first="Josephine" last="Ughasi">Josephine Ughasi</name>
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<author><name sortKey="Bekard, Hilaria Esiawonam" sort="Bekard, Hilaria Esiawonam" uniqKey="Bekard H" first="Hilaria Esiawonam" last="Bekard">Hilaria Esiawonam Bekard</name>
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<country xml:lang="fr">Ghana</country>
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<author><name sortKey="Coulibaly, Maimouna" sort="Coulibaly, Maimouna" uniqKey="Coulibaly M" first="Maimouna" last="Coulibaly">Maimouna Coulibaly</name>
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<author><name sortKey="Adabie Gomez, Delphina" sort="Adabie Gomez, Delphina" uniqKey="Adabie Gomez D" first="Delphina" last="Adabie-Gomez">Delphina Adabie-Gomez</name>
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<country xml:lang="fr">Ghana</country>
<wicri:regionArea>African Regional Programme for Insect Science (ARPPIS), University of Ghana, Legon</wicri:regionArea>
<orgName type="university">Université du Ghana</orgName>
<placeName><settlement type="city">Accra</settlement>
<settlement type="town">Legon (Ghana)</settlement>
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</placeName>
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</author>
<author><name sortKey="Gyapong, John" sort="Gyapong, John" uniqKey="Gyapong J" first="John" last="Gyapong">John Gyapong</name>
<affiliation wicri:level="4"><nlm:aff id="I4">Lymphatic Filariasis Support Centre for Africa, Noguchi Memorial Institute for Medical Research, University of Ghana, P.O. Box LG 581, Legon-Accra, Ghana</nlm:aff>
<country xml:lang="fr">Ghana</country>
<wicri:regionArea>Lymphatic Filariasis Support Centre for Africa, Noguchi Memorial Institute for Medical Research, University of Ghana, P.O. Box LG 581, Legon-Accra</wicri:regionArea>
<orgName type="university">Université du Ghana</orgName>
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<author><name sortKey="Appawu, Maxwell" sort="Appawu, Maxwell" uniqKey="Appawu M" first="Maxwell" last="Appawu">Maxwell Appawu</name>
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<author><name sortKey="Wilson, Michael David" sort="Wilson, Michael David" uniqKey="Wilson M" first="Michael David" last="Wilson">Michael David Wilson</name>
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<wicri:regionArea>Department of Parasitology, Noguchi Memorial Institute for Medical Research, University of Ghana, P.O. Box LG 581, Legon-Accra</wicri:regionArea>
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<affiliation wicri:level="4"><nlm:aff id="I4">Lymphatic Filariasis Support Centre for Africa, Noguchi Memorial Institute for Medical Research, University of Ghana, P.O. Box LG 581, Legon-Accra, Ghana</nlm:aff>
<country xml:lang="fr">Ghana</country>
<wicri:regionArea>Lymphatic Filariasis Support Centre for Africa, Noguchi Memorial Institute for Medical Research, University of Ghana, P.O. Box LG 581, Legon-Accra</wicri:regionArea>
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<author><name sortKey="Boakye, Daniel Adjei" sort="Boakye, Daniel Adjei" uniqKey="Boakye D" first="Daniel Adjei" last="Boakye">Daniel Adjei Boakye</name>
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</placeName>
</affiliation>
<affiliation wicri:level="4"><nlm:aff id="I4">Lymphatic Filariasis Support Centre for Africa, Noguchi Memorial Institute for Medical Research, University of Ghana, P.O. Box LG 581, Legon-Accra, Ghana</nlm:aff>
<country xml:lang="fr">Ghana</country>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term>
<term>Elephantiasis, Filarial (epidemiology)</term>
<term>Elephantiasis, Filarial (transmission)</term>
<term>Ghana (epidemiology)</term>
<term>Humans</term>
<term>Insect Vectors (parasitology)</term>
<term>Insect Vectors (physiology)</term>
<term>Sterculiaceae (classification)</term>
<term>Sterculiaceae (parasitology)</term>
<term>Sterculiaceae (physiology)</term>
<term>Wuchereria bancrofti</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Animaux</term>
<term>Filariose lymphatique (transmission)</term>
<term>Filariose lymphatique (épidémiologie)</term>
<term>Ghana (épidémiologie)</term>
<term>Humains</term>
<term>Sterculiaceae ()</term>
<term>Sterculiaceae (parasitologie)</term>
<term>Sterculiaceae (physiologie)</term>
<term>Vecteurs insectes (parasitologie)</term>
<term>Vecteurs insectes (physiologie)</term>
<term>Wuchereria bancrofti</term>
</keywords>
<keywords scheme="MESH" type="geographic" qualifier="epidemiology" xml:lang="en"><term>Ghana</term>
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<keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Sterculiaceae</term>
</keywords>
<keywords scheme="MESH" qualifier="epidemiology" xml:lang="en"><term>Elephantiasis, Filarial</term>
</keywords>
<keywords scheme="MESH" qualifier="parasitologie" xml:lang="fr"><term>Sterculiaceae</term>
<term>Vecteurs insectes</term>
</keywords>
<keywords scheme="MESH" qualifier="parasitology" xml:lang="en"><term>Insect Vectors</term>
<term>Sterculiaceae</term>
</keywords>
<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Sterculiaceae</term>
<term>Vecteurs insectes</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Insect Vectors</term>
<term>Sterculiaceae</term>
</keywords>
<keywords scheme="MESH" qualifier="transmission" xml:lang="en"><term>Elephantiasis, Filarial</term>
</keywords>
<keywords scheme="MESH" qualifier="épidémiologie" xml:lang="fr"><term>Filariose lymphatique</term>
<term>Ghana</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Animals</term>
<term>Humans</term>
<term>Wuchereria bancrofti</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Animaux</term>
<term>Humains</term>
<term>Sterculiaceae</term>
<term>Wuchereria bancrofti</term>
</keywords>
<keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Ghana</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"><sec><title>Background</title>
<p>Recent data from Ghana indicates that after seven rounds of annual mass drug administration (MDA) there is still sustained transmission albeit at low levels in certain areas where <italic>Anopheles melas</italic>
, <italic>An. gambiae</italic>
 s.s., <italic>Mansonia</italic>
 and <italic>Culex</italic>
 species are the main biting mosquitoes. <italic>Anopheles gambiae</italic>
 s.l. and <italic>An. funestus</italic>
 are the known vectors in Ghana and a recent report indicated that <italic>An. melas</italic>
 could transmit at low level microfilaraemia. However, because <italic>An. melas</italic>
 is not found everywhere there was the need to determine whether any of the other culicine species could also be playing a role in the transmission of LF.</p>
</sec>
<sec><title>Methods</title>
<p>Indoor mosquitoes collected once a month for three months using pyrethrum spray catches in six communities within the Kommenda-Edina-Eguafo-Abirem (KEEA) District, Central Region of Ghana were morphologically identified, dissected and examined for the presence of <italic>W. bancrofti</italic>
. Additionally, stored mosquito samples collected during previous years in 8 communities from the Gomoa District also in the Central Region were similarly processed. The identities of all <italic>W. bancrofti</italic>
 parasites found were confirmed using an established PCR method.</p>
</sec>
<sec><title>Results</title>
<p>A total of 825 indoor resting mosquitoes comprising of 501 <italic>Anopheles</italic>
 species, 239 <italic>Mansonia</italic>
 species, 84 <italic>Culex</italic>
 species and 1 <italic>Aedes</italic>
 species were dissected and examined for the presence of <italic>W. bancrofti</italic>
. <italic>Mansonia africana</italic>
 had infection and infectivity rates of 2.5<italic>%</italic>
. and 2.1% respectively. <italic>Anopheles gambiae</italic>
 s.l. had an infection rate of 0.4% and a similar infectivity rate. None of the <italic>Culex</italic>
 sp. and <italic>Aedes</italic>
 sp were found with infection. From the stored mosquitoes the infection and infectivity rates for <italic>M. africana</italic>
 were 7.6% (N = 144) and 2.8% respectively whilst the corresponding rates for <italic>M. uniformis</italic>
 were 2.9% (N = 244) and 0.8%.</p>
</sec>
<sec><title>Conclusions</title>
<p>This is the first report of <italic>Mansonia</italic>
 species as vectors of lymphatic filariasis (LF) in Ghana and in West Africa since that of 1958 in Guinea. The revelation of a hitherto unrecognised vector which is possibly more efficient in transmission than the recognised ones has a profound implication for elimination of lymphatic filariasis programmes in the sub-region.</p>
</sec>
</div>
</front>
<back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Dunyo, Sk" uniqKey="Dunyo S">SK Dunyo</name>
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<biblStruct><analytic><author><name sortKey="Dzodzomenyo, Md" uniqKey="Dzodzomenyo M">MD Dzodzomenyo</name>
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</author>
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</analytic>
</biblStruct>
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</biblStruct>
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</analytic>
</biblStruct>
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</analytic>
</biblStruct>
<biblStruct><analytic><author><name sortKey="Collins, Fh" uniqKey="Collins F">FH Collins</name>
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</author>
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</biblStruct>
</listBibl>
</div1>
</back>
</TEI>
<affiliations><list><country><li>Ghana</li>
<li>Mali</li>
</country>
<region><li>Région du Grand Accra</li>
</region>
<settlement><li>Accra</li>
<li>Legon (Ghana)</li>
</settlement>
<orgName><li>Université du Ghana</li>
</orgName>
</list>
<tree><country name="Ghana"><region name="Région du Grand Accra"><name sortKey="Ughasi, Josephine" sort="Ughasi, Josephine" uniqKey="Ughasi J" first="Josephine" last="Ughasi">Josephine Ughasi</name>
</region>
<name sortKey="Adabie Gomez, Delphina" sort="Adabie Gomez, Delphina" uniqKey="Adabie Gomez D" first="Delphina" last="Adabie-Gomez">Delphina Adabie-Gomez</name>
<name sortKey="Appawu, Maxwell" sort="Appawu, Maxwell" uniqKey="Appawu M" first="Maxwell" last="Appawu">Maxwell Appawu</name>
<name sortKey="Bekard, Hilaria Esiawonam" sort="Bekard, Hilaria Esiawonam" uniqKey="Bekard H" first="Hilaria Esiawonam" last="Bekard">Hilaria Esiawonam Bekard</name>
<name sortKey="Boakye, Daniel Adjei" sort="Boakye, Daniel Adjei" uniqKey="Boakye D" first="Daniel Adjei" last="Boakye">Daniel Adjei Boakye</name>
<name sortKey="Boakye, Daniel Adjei" sort="Boakye, Daniel Adjei" uniqKey="Boakye D" first="Daniel Adjei" last="Boakye">Daniel Adjei Boakye</name>
<name sortKey="Gyapong, John" sort="Gyapong, John" uniqKey="Gyapong J" first="John" last="Gyapong">John Gyapong</name>
<name sortKey="Ughasi, Josephine" sort="Ughasi, Josephine" uniqKey="Ughasi J" first="Josephine" last="Ughasi">Josephine Ughasi</name>
<name sortKey="Wilson, Michael David" sort="Wilson, Michael David" uniqKey="Wilson M" first="Michael David" last="Wilson">Michael David Wilson</name>
<name sortKey="Wilson, Michael David" sort="Wilson, Michael David" uniqKey="Wilson M" first="Michael David" last="Wilson">Michael David Wilson</name>
</country>
<country name="Mali"><noRegion><name sortKey="Coulibaly, Maimouna" sort="Coulibaly, Maimouna" uniqKey="Coulibaly M" first="Maimouna" last="Coulibaly">Maimouna Coulibaly</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

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Mansonia africana and Mansonia uniformis are Vectors in the transmission of Wuchereria bancrofti lymphatic filariasis in Ghana

Mansonia africana and Mansonia uniformis are Vectors in the transmission of Wuchereria bancrofti lymphatic filariasis in Ghana

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